export declare class Prop2<U, T> {
    private values;
    private onChangedCallback;
    private callbackThis;
    constructor(values: T[], onChangedCallback: (index?: U, oldValue?: T, value?: T) => void, callbackThis: Object);
    get(index: U): T;
    set(index: U, value: T): void;
    toString(): string;
}
export default Prop2;